diff --git a/app/controllers/admins/laboratory_subjects_controller.rb b/app/controllers/admins/laboratory_subjects_controller.rb
index f25a072a3..c09697c7e 100644
--- a/app/controllers/admins/laboratory_subjects_controller.rb
+++ b/app/controllers/admins/laboratory_subjects_controller.rb
@@ -17,13 +17,15 @@ class Admins::LaboratorySubjectsController < Admins::BaseController
   def destroy
     return render_js_error('不能删除自建课程', type: :notify) if current_laboratory_subject.ownership?
 
-    current_subject = current_laboratory_subject.subject
-    current_subject.shixuns.each do |shixun|
-      shixun.destroy!
+    ActiveRecord::Base.transaction do
+      current_subject = current_laboratory_subject.subject
+      current_subject.shixuns.each do |shixun|
+        shixun.destroy!
+      end
+      current_subject.destroy!
+
+      render_delete_success
     end
-    current_subject.destroy!
-
-    render_delete_success
   end